| XS | S | M | L | XL | XXL | |
| Men | 118-123 | 124-129 | 130-135 | 136-141 | 142-147 | 148+ |
| Women | 114-119 | 120-125 | 126-131 | 132-137 | 138-143 | 144+ |
| Kids | 107-112 (Infant) | 113-118 (Toddler) | 119-124 (Little Kids) | 125-130 (Big Kids) |
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Spy Dirk
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Free Shipping & Returns
Free Shipping & Returns
Free Shipping & Returns
Don't pay a cent for standard shipping ever again. Other shipping options are available. Learn More
Not 100% satisfied with your purchase? Return them within 45 days for a full refund or exchange. Learn More
See Better Guarantee
See Better Guarantee
See Better Guarantee
We understand prescription lenses are an investment in your vision. At SportRx, we go beyond premium brand names and prescription lenses. We give you friendly professionals to help you find what you need and 45 days to make sure you’re happy with your purchase. Your satisfaction is our promise, or your money back. Learn More
FSA & HSA Accepted
FSA/HSA ACCEPTED
FSA/HSA ACCEPTED
Flexible spending accounts (FSA), health savings accounts (HSA), and out-of-network vision insurance coverage can all be used towards awesome new prescription sunglasses, eyeglasses, and goggles. Learn More
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PRODUCT OVERVIEW
Coverage
Sweatability
Prescription Friendliness
SportRx Frame Width™ 
135mm
135mmSportRx Frame Width™ (SFW) is the measurement our Sports Opticians use to find the most accurate fit possible. Unlike most eyewear measurements that have little to do with fit, SFW serves as an indicator for how well a frame or goggle will fit your face.
View Size & Fit GuideSPORTRX FIT GUIDE
SportRx Frame Width™ (SFW) is the measurement our Sports Opticians use to find the most accurate fit possible. Unlike most eyewear measurements that have little to do with fit, SFW serves as an indicator for how well a frame or goggle will fit your face.
SportRx Frame Width™ Chart
*All Sizes in MillimetersDETERMINING YOUR SFW
Use Eyeglasses and Not Sunglasses
Using flatter eyeglasses makes for a more accurate measurement. It takes a bit more finesse with wrapped sunglasses to get an accurate SFW measurement.
Have more than one pair?It never hurts to have more than one 'frame' of reference! If you have more than one pair that you love, you can measure multiple pairs and get an average.
Make sure the glasses fit!
Since we're using your glasses as a template for ideal fit, make sure they're a pair that are comfortable: not too wide, not too narrow. A quick glance in the mirror will show if the frames spread too far past the edges of your face or seem to 'pinch' it.
How/What do I measure?Measure with the temples opened out fully. Aim for right behind the hinge and measure from the inside of the frame material of one side to the inside of the other side.
FINDING YOUR BRIDGE FIT
Finding the right eyewear for your face means two things: the right frame size and the right bridge style. At SportRx, we have three different bridge styles:
Standard
A standard nose bridge is best for those with nose bridges that go higher than their pupils, or if you have more narrow cheekbones. Standard nose bridges are fixed and don’t include adjustable nose pads.
AdjustableAn adjustable nose bridge includes flexible nose pads that can be adjusted for a firm, yet comfortable hold. This style is best for those who prefer a more customizable fit.
Low-Bridge
The low-bridge fit is designed for those with narrow nose bridges or cheekbones higher than their nose bridge. Also called Asian Fit, this is a great choice if your frames tend to slide down or touch your cheeks.
SPY Dirk prescription sunglasses say it all in the name. Simple, yet badass, the Dirk just looks dangerous with its bold and wide wraparound frame. Built from shatter-resilient Grilamid and a built-in hinge system, the Dirk prescription frame is one tough pair of shades. Need a tough pair of SPY sunglasses in prescription? We've got you covered with custom prescription lenses for amazing vision in your SPY Dirk prescription sunglasses.
Benefits
Mood-Boosting Vision
High definition lenses with the visual performance benefits of SPY’s Happy Lens for mood-boosting color and distortion-free clarity in one lens.
Enhanced Durability & Longevity
Hard coating provides a high-quality, scratch-resistant coating protecting lenses everywhere your adventure takes you.
SIZE & FIT GUIDE
- Lens Measurements
1 - Lens Width: 64 mm
2 - Lens Height: 44 mm
- Frame Measurements
3 - Bridge Width: 16 mm
4 - SportRx Frame Width™ (SFW): 135 mm | Learn More
5 - Temple Arm Length: 125 mm
- Frame Fit
M | Not sure about frame fit? Frame Fit Guide
- Bridge Fit
Standard | Not sure about bridge fit? Bridge Fit Guide
TECH SPECS
- Frame Materials
- Grilamid
- Safe from Harmful UV Rays
- Block carcinogenic ultraviolet (UV) light from reaching your eyes. With 100% UV protection, your eyes are safe from absorbing harmful sun rays.
- 8 Base
- A high wrap or wrap around frame. These types of glasses fit close to the sides of your face and provide additional peripheral coverage.
- Included Accessories
- Microfiber Bag
- Perfect For These Activities
- Boating/Sailing, Driving, Fishing, Mountaineering, Water Sports
SPY Happy™ Lenses SPY Happy™ lenses keep out harmful UV and short-wave blue light while allowing for brighter colors, more vivid surroundings, and even an improved mood.
SPY Happy™ Lenses
A visual experience that you can feel. See better and feel better with SPY Happy™ lenses, the only scientifically proven lens with therapeutic benefits, letting in the good rays that boost mood and alertness, and filters out bad rays that create noise and haziness.
See Better. Feel Better.
Rich ColorsSPY Happy™ lenses keep out harmful UV and short-wave blue light, while clearing the path for richer, brighter colors and sharper contrast and clarity.
Improved MoodThe sun gives off rays that are both good and bad for your health and well-being. SPY Happy™ lens technology filters out the "bad rays" that are made of UV and short-wave HEV blue light that lead to fatigue and eyestrain, while allowing in the "good rays" that are made up of long-wave blue light.
More Than ContrastBecause other color enhancing lenses only focus on filtering out the bad rays, they end up blocking the good rays along with it. SPY Happy™ lenses filter out the bad while amplifying the good, providing you with a boost in mood along with a boost in contrast.
Happy™ PolarBlock out 99.9% of glare with Happy™ Polar lenses. The days of strained eyesight and squinting in bright sunlight are long behind you.
Happy™ Lens + Spectra MirrorThese flashy mirror coatings are just what you need to make your Happy™ lens even cooler. SPY Happy™ lenses with a Spectra mirror add a pop of color and added glare protection.
SportRx Sport Optimized™ LensesAll Sport Optimized™ lenses come ready-made with advanced lens coatings for maximized clarity and contrast. These lenses feature multiple clear, tinted, polarized, and photochromic options.
SportRx Sport Optimized™ Lenses
SportRx Sport Optimized™ lenses cover every possible base so that you always have a quality lens no matter your intended use. With clear, tinted, polarized, and photochromic options, there's a Sport Optimized™ lens for everything under the sun - and indoors too! See the difference for yourself today.
The perfect lens. All the time.
CustomizationOur Sport Optimized™ lenses are uniquely functional, the ideal blend of our years of optical experience and knowledge of what performs best for each sport.
VersatilityNo matter what you're playing, there's a Sport Optimized™ lens for you. Be the boss of any environment or lighting condition.
High-TechAll Sport Optimized™ lenses come ready-made with advanced lens coatings designed to make your life SO much easier. See the difference yet?
PhotochromicThese Sport Optimized™ lenses use UV-based and light-reactive technology to change their tint so that you're perfectly equipped all day, every day.
PolarizedEliminate glare with these made-for-you Sport Optimized™ lenses. Whether you're fishing or driving, the days of annoying glare are far behind you.
Spy Dirk Reviews
*Results Vary From Person To Person
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